Zombie Tower Defense 4 is an addicting online strategy game. Hordes of scary undead are coming. They will attack the village and eat everybody if you do not kill them before they reach the end of the path. Before the first wave starts, you will be given a few minutes to prepare. Choose available turrets and drop them along the track carefully. They will turn into powerful weapons. Not only that, you can finish your mission sooner if you unlock upgrades. Good luck!